/* ================================================================
 * Copyright (c) 2000-2003 CollabNet.  All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 * 
 * 1. Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 * 
 * 2. Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution.
 * 
 * 3. The end-user documentation included with the redistribution, if
 * any, must include the following acknowlegement: "This product includes
 * software developed by Collab.Net <http://www.Collab.Net/>."
 * Alternately, this acknowlegement may appear in the software itself, if
 * and wherever such third-party acknowlegements normally appear.
 * 
 * 4. The hosted project names must not be used to endorse or promote
 * products derived from this software without prior written
 * permission. For written permission, please contact info@collab.net.
 * 
 * 5. Products derived from this software may not use the "Tigris" or 
 * "Scarab" names nor may "Tigris" or "Scarab" appear in their names without 
 * prior written permission of Collab.Net.
 * 
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL COLLAB.NET OR ITS CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * ====================================================================
 * 
 * This software consists of voluntary contributions made by many
 * individuals on behalf of Collab.Net.
 */ 



package org.tigris.noodle.filters;

import java.util.Enumeration;

import javax.servlet.http.HttpServletRequest;

import org.tigris.noodle.NoodleData;
import org.tigris.noodle.NoodleRequestFilter;

import HTTPClient.NVPair;

/**
 * <h3>Request Filter</h3>
 * 
 * This filter will copy all the headers that have a value from the client request to the proxy
 * request. It doesn't attempt to modify any of them. This filter should be executed before any
 * other request filter.
 * 
 * @author <a href="mailto:jon@collab.net">Jon S. Stevens</a>
 * @author <a href="mailto:leonardr@collab.net">Leonard Richardson</a>
 */
public class CopyAllHeaders
    implements NoodleRequestFilter
{
    public void filter( NoodleData noodleData )
        throws Exception
    {
        HttpServletRequest req = noodleData.getClientRequest();
        // get all the headers from the request
        for ( Enumeration e = req.getHeaderNames(); e.hasMoreElements(); )
        {
            String header = (String) e.nextElement();
            String value = req.getHeader( header );
            if ( value == null )
            {
                value = "";
            }
            NVPair tmp = new NVPair( header, value );
            noodleData.getHeadersToSend().add( tmp );
        }
    }
}
